Regulator



slept. 3, 1,929.

R, M. PETERSIME REGULATOR v Filed Jan. 7. 1925 Patented Sept, 3, 1929.y I

RAY MILLER PETERSIME, or GETTYSBURG, oHIo.

REGLATOR..

Application led January l?, 1,926. Serial No. 79,850.

f This invention relates to regulators, and Flgure 4 is a cross vertical section taken more particularly to a thermostatic con# trolled'regulator for use in incubators and the like, for making and breaking an elec- I tric circuit toa heater.

The primary object of my invention is the provision ofa regulator which Will eiliciently make and break an electric circuit in 'a sudden or quick manner, so as not to fuse oints or contacts, or to form an arc the ' on line 4 4 'of Figure 3.

Referring to the drawings by numerals, ,a

'stationary arm or bracket 10 is provided which consists of a channel bar bent in the form of. a right angle one member of which is provided with an attaching liange 11 through which screws. or, the like are passed to. rigidly secure the arm' or bracket in place. Pivotally connected to this stationaryv arm there etween which` is very v detrimental toL or bracket 10 is a movable arm 13, the inner contacts.

A further object of the invention .is to 1 Aprovide a-regulator as above outlined hav- '15 ing a `movably mounted contact arm pro.

vided with a contact on one end thereof v adapted .to engage a permanent contact, the movement of said arm being controlled by a member operated by a thermostat and having ,meansl thereonwhich when moved past the dead center at its point of engage; ment with the movable arm will suddenly A move said arm to either make or break a vcircuit to a heater wired tothe contacts.

A stillfurther object of the'in'vention is lthe provision of a safety member Aoperated by the thermostat and connected to thecontact arm for assuring movement of the movable contact arm in ^order to engage or disengage the contacts as the`t'emperature at the thermostat rises above or falls below pre determined degrees.

It is also an object of the invention tov provide a. deg/ice of the above indicated character, which'isfsimple and substantial in construction, which can be manufactured economically, and which will be thoroughly .eflicient and ractical in use.

Withthe oregoing and other objects in view, which willrbe .apparent as, the description proceeds, the invention resides in the constructioliand arrangement of parts,

as hereinafter described and claimedit beingvunderstood that changes can be vmade r within the scope of what is claimed,A without departing from the spirit of the invention.

panyfing drawings, wherein: 5o. f `proved regulator,`

Figure 2 is a horizontal section taken on line 2-2 of Figure 1,

The4 invention is illustrated in the accom- F gure 1 is a side elevation of my iincontact arm on the'bracket.

end'of vwhich. is provided with a pair of ears 14 extending between the side flanges of the channel member forming the arm or bracket to receive the rivet '12. The movable arm 13 is also of channel formation to reinforce the same against bendhig or flexing while in operation. p y

Positioned between the outer portion of the bracket 10 and the movable arm 13 is a series of thermostatic wafers 15, secured to the movable arm 13, as at 16, and an adqusting screw 17 carried by the arm of the y bracket is adapted lto. engage the outer end of the series of wafers 15 so as to cause the movable arm 13 to be swung on its pivot 'when said thermostatic wafersare expanded due to excessive temperature# A lock nut 18 is provided for locking the adjusting screw in a desired position against accidental ,movement Attached at one end to the movable arm 13 is a coil spring 19, the attachment being .made by looping the end of the spring through a pair of small openings in the arm 13. The other endof the coil'spring is at tached to the outer end 'of a threaded rod 2O which extends through an opening therefor inthe stationary arm or bracket and is provided with-fa nut 21 engaging the arm of the bracket whereby the tension of the coil spring 19 may be varied, said coilv spring the movable arm 13 towards the bracket.

The stationaryp arm or bracketv 1() has al pair of upstanding spaced ears near its outer end to receive therebetween a 4contact arm `.23, having a pair of down-turned flanges '24 at each side thereof adjacent one end through which a rivet, or the like, 25 passes from theup'standing ears 22 on the stationary .arm 10 for pivotally supporting said On the inner end of the arm 23 is a contact member 24 insulated from the arm by means of insulaf tion 25', and a like contact member 26 is carried by the bracket and insulated therefrom as at 27. The contact members 24 and'26 are adapted to engage and disengage each other when the arm 23 is swung upon its pivotal connection 25, and each of these contact devices is provided with a binding nut for connecting the electric wires thereto.

On the outer end of thetcontact arm 23, between the down-turned flanges 24 thereof is a roller 29, mounted on a pin 30 extending between said flanges, and cooperating. with this roller is a leaf spring 31 attached to the outer end lof the movable arm by screw 33 and extending downwardly therefrom is provided with a small offset or inturned projection 32 at thepoint where said leaf spring engages the roller. By extending the inner end of the leaf spring between the side iianges of the arm 13 and securing the same ,to the intermediate wall, it is held against turning or twisting movement. In order to adjust the tension of the leaf spring against the roller-29; the free end of the arm 13 is turned downwardly, as at 3a, and has an adjusting screw 35 threaded therethrough adapted to engage the leaf spring v31 to either force the same away fromlthe roller 29 or permit the spring to bear tightly thereagainst. A lock nut 36 is carried by the screw 35 for lookin the same against accidental movement;y It can be seen that when the arm 13 is forced upwardly the projection 32 on the leaf spring will bear against the roller 29 holding the contacts snugly in engagement with each other until said pro- ]ectionhas passed dead center at its point of engagement with the roller 29, at which time the spring tension of the leaf spring will force the projection inwardly thus causing the outer end of thel contact arm having the'roller thereon to be'swung downwardly, raising or disengaging the contacts 24 `and 26.

Carried by the movable arm 13 is aI downwardly extending or depending bar 38, having notches 39 in its opposite edges at the point where it extends through an opening 40 in the contact arm 23, so as to` loosely connect the contact arm 23 to the movable arm 13. The notches in the edges of the bar 38 are of sufficient length so that thebar only engages the'contact arm 23 should the small projection 32 arranged on the Vleaf spring 31 fail to properly swing the contact arm 23 when the movable arm 13 is moved .by the thermostat, thus providing a safety engagement with each other willv permit curwafers 15 reaches a predetermined point,

regulated by means of the screw 17, the arm jectioni suddenly inwardly giving a quick downw rd ovement of the outer end of the contact arm 23V having theroller thereon, thus swinging the inner end of said contact armfupwardly and disengaging the contacts 24 and 25. As the current is broken rather suddenly an arcwill not be formed between the contacts, which would tend to fuse same and destroy the faces thereof. A

' As soon as the contacts are disengaged the current to the heater is cut off, vand as the temperature decreases the arm l3 returns slowlyto its initial or nrmalposition, due to the spring 19. As the arm" 13 returns to its normal position the projection 32 onthe leaf spring 3l will engage the rollerr29 on the'contactarm 23 and cause the arm 2 3 to have aY slight, quick, or sudden movement when the projection passes the roller 29, which will return'the contactsto engagement with each other; l From the foregoing it can be seen that I have pro-vided a regulator which. will efficiently make and break an electric circuit in a sudden or quickmanner, a very desirable feature in regulators of this general type which are used for various purposes.

Having thus described my invention, what Iclaim as new is: j l

1. A regulator comprising a stationary arm, a movable. arm pivoted at one end thereto, a thermostat interposed between -said arms for imparting movement to themovable arm,r a 'contact-arm pivoted to the stationary arm and adapted to engage a contact on 4said arm, means responslve to the movement of the movable arm for swingingv the contact-arm in engaging Vand'd'isengaging the contacts, and auxiliary means responsive to the movement of the movable arm for operating thecontact-arm on excessive movement of the movable arm 1n either direction. Y a

2. A regulator comprlslng' a statlonary,

arm, a movable arm, a thermostat arranged between said arms for moving sald movable xfor swinging said contact arm upon movement of sald movable arm, and a positive 130 means carried by said movable arm and connected to said Contact arm for assuring the engaging or disengaging of said contacts should said means carried by said movable arm which engages said Contact arm fail to operate.

3. A regulator comprislng a stationary arm, a movable arm, a thermostat arranged lbetween said stationary arm and movable arm for moving said movable arm away from said stationary arm, spring means for returning said movable arm towards said stationary arm when'said thermostat contracts, a contact arm pivotally carried by said stationary arm and having a contact arranged upon the same, a stationary contactadapted to be engagedand disengaged by said contact on said contact arm, a leaf spring carriedby said movable arm and yieldably engaging said contact arm, and an off-set .portion formed on said leaf spring for engaging said contact arm in order to,`

swing the Asame on its pivot upon movement of said movable arm.

4. A regulator comprising a stationary arm, a movable arm, a thermostat arranged between said stationary arm and movable `arm for Vmoving said -movable arm away from said stationary arm, spring means for returnlng said4 movable arm towards said stationary arm when said thermostat contracts, a contact arm pivotally carried' by said stationary arm and having a contact arranged upon the same, a stationary `contact adapted to be engaged and disengaged by said contact on said contact arm, a leaf spring carried by said movable arm and yieldably engaging said contact arm, an inturned projection carried by said leaf spring and adapted to engage one end of said contact armfor swinging' said contact arm on its pivot when said ,projection moves pastthe point of dead center at itspoint of engagement with 'said contact arm.;

5. A regulator comprising a stationary arm, a movable arm, a thermostat arranged between said vstationary arm and movable arm for moving s aid movable larm away from said stationary arm, spring meansfor returning said movable arm towards said stationary arm when said thermostat con-- gagement with said contact arm, and means for adjusting 'the tension of said'leaf spring.

6. A regulator comprising a stationary arm, a movable arm, a thermostat arranged for moving said movable arm, a contact arm pivotally mounted and having a contact on one end thereof, a stationary contact adapted to be engaged and disengaged by said contact on said contact arm upon movement of said contact arm, a yieldable member carried by said movable arm, a roller mounted upon one end of said contact arm and engaged by said yieldable member carried by said movable arm, and a projection carried by said yieldable member and adapted to swing said contact arm on its pivot when said projectionis moved past the point of dead center of its engagement with said roller.

7. A regulator comprising a stationary arm, a movable arm, a thermostat arranged for moving said movable arm, a contact arm pivotally mounted and having a contact on one end thereof, a stationary contact adapted to be engaged and disengaged by said contact on said contact arm upon movementof said contact arm, a yieldable member carried by said movable arm, a roller mounted upon one end of said contact. arm and en gaged by said yieldable member carried by said movable arm, a projection carried by said yieldable member and adapted to swing said contact arm on its pivot when said projection is moved past the point of dead cen-v ter of its engagement with said roller, and means for adjusting the tension of said yieldable member.

8. A'regulator com rising a movable arm, a thermostat arrange for moving said movable arm, a pivotally mounted contact arm having a contact carried by one end thereof,

' a stationary contact adapted to be engaged by said contact on said contact arm, means carried by said movable arm and engaging said contact arm for swinging said contact arm upon movement of saidv movable arm, and means carried by said movable armand connected to said contact arm for assuring movement of said contact arm upon move# ment of said movable arm should said vmeans engaging said contact arm and carried by said movable arm fail'to function.

9. A regulator comprising a movable arm, a thermostat arranged for moving said arm, a pivoted Contact arm, a contact'carried by oneend' of said contact arm, a stationary contact adapted to be engagedfand disengaged by said first mentioned contact, a roller provided on said contact arm, a depending member carried by said movable arm, a projection arranged upon said depending member and adapted to move said contact arm when 'said projection is moved to a point" past dead center at its engagejustin'g. the tension of said 'depending member against said roller.

lment with said roller, and means for ading screw 10; A regulator' comprising a movable arm, a thermostat adapted to move said movable arm, a circuit making and breaking structure adapted to be operated by the movement of said movable arm, and a bar carried by said movable arm andbeing loosely connected to said circuit making and breaking structure so as to make or --break the circuit upon extreme movement of said movablearm in either direction should saidV arm when the thermostat contracts, a contact bar'pivotally mounted upon lsaid stationary arm, a contact upon one end :of sald Contact arm, 'a stationary contact adaptedv to be `engaged and disengaged by lsaid lcontact on said contact arn, a roller provided upon one end of said contact-arm, aleaffspring carried by said movable arm and egitending downwardly and yyieldably engagingv said,

roller, .a depending portion formed on said 'movable arm, an adjusting screw, threaded through saidjdependlng portion and engag- ,ing said leaf spring for varyingthe tension thereof against said roller, aV projection formed on said leaf spring and adapted ,to

' swing said contact'arm on its pivot when said projection is moved to a point'slightly to one side of dead center of said roller.

r adjusting the degree ofl temperature said movable arm wi1l be lmoved at, spring means for returning said movable 12. A regulator comprising a stationary arm arranged in angle formation, a movable arm pivotally connected, to one angled poration of said stationary arm, a thermostat positioned between the other angled @portion of said stationary arm and the movable arm for moving said movable arm, an adjust-l ing screw for adjusting thedegree of temi perature said'movable arm will be moved at, sprmgmeans for returning lsald .movable arm when the thermostat contracts, a con-- tact bar pivotalsly mounted upon saidsta-- tionary arm, a'contact upon'one end of.V said contact arm, a' stationaryl contactl adapted to be engaged and disengaged by said contact on said contact arm,jfa4 roller provided upon one'end of said contact arm,

and extending downwardly and yieldably` engaging 'said roller, a depending portion formed on said movable arm, anadjusting screw threaded through said dependingportion and Aengaging said leaf spring for varying the tension thereof against said roller,

a projection formed onsaid leaf spring and` adapted'to swing said Contact arm on its 'a leaf Lspring carried by said movable arm pivot when ,said projection is moved to a point slightly to" one side of dead center of said roller,- and a dependingl bar formed on.

said movable arm and having notches formed 1n the sides thereof, said contact arm having an ripening formed therein'fo'r'receiving the notched. portion of the depending bar, said notches being of suiicient size so as to only move said contact arm upon' movement the leaf spring fail to move the contact arm.

signature. n

RAY MILLER PETERSIME.

In testimony whereof, I have afHXed my" of the movable arm should the projection on y 

